Archived posting to the Leica Users Group, 2005/06/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]> I uploaded a comparison of photos taken with the same lens, a 2.8/60mm > Macro Elmarit on the Leica DMR and the Canon 20D on: > > http://www.leicaphoto.net/Download/CanonVsLeica/index.html > > Peter Thanks for the images! I have a few comments about the 20D vs. DMR comparison shots. Although both were taken with the same lens, they were shot in aperture priority mode and in Auto WB. According to the EXIF, the DMR exposed about 1 stop more light than the 20D. As a result, shadow, highlights, color, and details will be very different. In addition, make sure not to be fooled by the default ACR2 settings -- which are actually "automatic" rather than "default" -- if trying to process the raw files. ACR2 analyzes the image information and tries to "correct" many of the raw parameters to provide a [mathematically] "improved" image. In this particular case, the ACR2 algorithm brightens the 20D image and darkens the DMR image (while changing shadow/highlight details). Certain conclusions can be drawn from the images with respect to the different metering, sharpness, etc. However, other variables should also be taken into account (processing parameters, anti-aliasing filter strength, raw exposure correction, workflow, white balance, DR, noise, complete system, real life workability, etc.). Regards, JR Geoffrion http://www.jrgeoffrion.com